Messages in this thread | | | Date | Sun, 10 Nov 2002 23:37:25 -0500 (EST) | From | "Albert D. Cahalan" <> | Subject | Re: 2.5.46-mm2 |
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William Lee Irwin III writes: > On Sun, Nov 10, 2002 at 08:58:28AM -0800, Andrew Morton wrote:
>> It could be the procps thing? `tiobench --threads 256' shows >> up as a single process in top and ps due to the new thread >> consolidation feature. If you run `ps auxm' or hit 'H' in top, >> all is revealed. Not my fave feature that.
The feature is both buggy (both false consolidation and failure to consolidate) and slow. While I do eventually need to add the feature, I'm not doing so until it can be implemented properly. So go ahead and enjoy procps-3.1.0 without it:
http://procps.sf.net/
Future-compatibility exists. The "m" and "-m" options are currently ignored so that you may use them in scripts without causing errors.
Um, BTW, don't we need /proc/42/threads/123/stat and friends before the Linux 2.6.xx release? Without them, the new clone flags supposedly let a user hide a task. That's really bad.
> Turns out monitoring things via /proc/ slowed it down by > some ridiculous factor while it was trying to spawn threads. > 9 hours became less than 1s when I stopped looking.
Not that procps will ever be fast, but 3.1.0 is a lot faster than 2.x.xx is. Five out of the last seven releases have included performance improvements, and more are coming.
You also get IO-wait info in vmstat. Upgrade today! :-) - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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